Stereo Tool
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Stereo Tool 7.32 BETA
https://forums.stereotool.com/viewtopic.php?t=4989		 Page 8 of 30
Author:  Bojcha [ Tue Oct 29, 2013 2:44 pm ]
Post subject:  Re: Stereo Tool 7.32 BETA
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Whoa. Here's an interesting idea that I need to post before I forget it.

If MB, ND, Noise Gate and Stereo Boost all use the same bands... I could greatly optimize the CPU load - the separation into bands would only need to be done once instead of 4 times, and MB and ND could share the (relatively ecpensive) smoothed volume measurements.
That mean all bands of those filters must share same settings, like "crossover settings" ?
Yes. Unfortunately...
For Noise reduction is ok.. actually it should be like that and also inside MB. I always thought that "noise reduction" should be inside MB per band. Where you can set speed of band "closing", how much to maximum close, thresh of closing.. etc.
Also because current "noise reduction" is dependent on Input level since it's at start of processing - thing that can never be precisely predicted.
Author:  gpagliaroli [ Tue Oct 29, 2013 7:13 pm ]
Post subject:  Re: Stereo Tool 7.32 BETA
@hvz: I have seen that there are some texts that are not in the exported file to be translated, with more time I can give a detail of them. :|
Author:  Modulator [ Tue Oct 29, 2013 7:23 pm ]
Post subject:  Re: Stereo Tool 7.32 BETA
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@hvz: I have seen that there are some texts that are not in the exported file to be translated, with more time I can give a detail of them. :|
Yep, like items under Reset menu at the top of the UI, "not registered" messages, drop down menus concerning detection type and amount of samples etc etc.

But it's a good start!
Author:  John van Es [ Tue Oct 29, 2013 8:42 pm ]
Post subject:  Re: Stereo Tool 7.32 BETA
I am convinced that separation into bands only once is the only it should be done. It will reduce phase errors. Convinced it will improve ST performance in many ways!
Author:  hvz [ Wed Oct 30, 2013 4:11 pm ]
Post subject:  Re: Stereo Tool 7.32 BETA
New command line version. Additions:
- --samplerate option to use different sample rates. With this, it's now also possible to output an MPX signal (but the input sample rate needs to be high enough, since input and output sample rates are still identical).
- --r128 option for R128 normalization. Including options to set the target level (default is -23 LUFS) and max TruePeak level.
http://www.stereotool.com/download/ster ... 32-009.exe

In R128 mode, the program needs multiple passes and writes intermediate data to a temporary file.
Author:  hvz [ Thu Oct 31, 2013 2:06 pm ]
Post subject:  Re: Stereo Tool 7.32 BETA
New thingy to try out: Matrix AGC processing.
Windows stand alone: http://www.stereotool.com/download/ster ... 32-009.exe
Winamp DSP: http://www.stereotool.com/download/dsp_ ... 32-009.exe
Windows VST: http://www.stereotool.com/download/vst_ ... 32-009.dll

What it does is: It doesn't do AGC on LEFT and RIGHT, but on L+R and L-R - the sum and difference signals. This makes the stereo signal very constant - and probably way too strong for most purposes, so I've added a few sliders to tame it down a bit afterwards.

Hint: Matrix AGC without taming down the stereo tends to increase multipath distortion problems, if you're going to try this out, enable the Stokkemask filter to compensate for that. And tame the stereo down a bit, otherwise it's really too much.
Hint 2: You should probably disable Stereo Boost when you use this.

Explanation of new sliders etc:
- "Matrix mode (L+R / L-R)" turns the new feature on (and the standard AGC off!)
The output contains nearly the same amount of audio in L+R and L-R, which means that there's an extreme amount of stereo present.
- "Reduce stereo" reduces the stereo effect by reducing the L-R component, afterwards
This may cause a reduction in stereo compared to the input signal. Output is VERY constant in stereo level, but it might not always be what you want.
- "L+R to L-R channel mix" - In the measurement, add a portion of the L+R channel to the L-R channel. This reduces the amount of stereo increment if there's a big difference between L+R and L-R.
- "Max instead of Mix" - Instead of adding a portion of L+R to L-R, use the maximum of a portion of L+R and L-R. This reduces the maximum stereo increment.
Author:  phoenix [ Thu Oct 31, 2013 3:57 pm ]
Post subject:  Re: Stereo Tool 7.32 BETA
This is great and a welcome improvement!
I can clearly remember working with Ozone Izotope 4/5 , that mid-side processing was way more consistent than Stereo processing in Multi-band compressor and expander.

Will try out tonight, can't wait.
Author:  \_/ [ Thu Oct 31, 2013 4:20 pm ]
Post subject:  Re: Stereo Tool 7.32 BETA
Interesting stuff, Hans.
Can this also be used for AGCing the identical part on both channels of a stereo signal, i.e. like virtual center/voice control?
Author:  phoenix [ Thu Oct 31, 2013 6:07 pm ]
Post subject:  Re: Stereo Tool 7.32 BETA
Why is Channel Separation permanently disabled irrespective of Matrix Mode being enabled/disabled?
Author:  Chris [ Thu Oct 31, 2013 7:19 pm ]
Post subject:  Re: Stereo Tool 7.32 BETA
Sounds nice on monitor, Reduce Stereo 100% and LR mix 100% :)
I dont know how it sounds on Air.! i am watting the Experts to test it first.!!!
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